If \[{{P}_{1}}\] and \[{{P}_{2}}\] are two odd primes numbers such that \[{{P}_{1}}>{{P}_{2}}\]then \[P_{1}^{2}-P_{2}^{2}\] is

• A.  an Even number
• B.  an odd number
• C.  an odd prime number            
• D.  a prime number